Release5d ago
OpenAI updates its Model Spec around five values, renames the model GPT and retires most style guidance
On Oct 29 OpenAI published Model Spec v2026.10.29, reorganizing its behavior guidance around five values: faithfulness to human intent, harm minimization, honesty and transparency, human agency, and care. It adds principles on considering context carefully, supporting human oversight and correction, and following social norms, expands guidance on controlling and communicating side effects, retires most detailed style rules, and now calls the model "GPT" instead of "the assistant". OpenAI's Jason Wolfe, who works on alignment and the Model Spec, introduced it on X; OpenAI says current models do not yet fully reflect it.
Benchmark7d ago
Anthropic study: 50 professional data analysts working with Claude Code followed the agent's secretly assigned lean on 86% of key judgment calls
On Oct 27 Anthropic's Alignment team published a randomized controlled trial, "How AI agents shape experts' judgment calls", shared on X by researcher Alex Tamkin. Fifty analysts experienced in causal inference used Claude Code (Claude Opus 4.8) to evaluate a program for a fictional farming cooperative, and on each analytical decision the agent's lean was set by coin flip without the analyst being told. Their choices matched the agent's lean 86% of the time (about 50% would mean no effect), and 77% later repeated the agent's arguments while only 15% credited the agent.
Open Source16d ago
Zhejiang University & Tencent Open-Source KnowGPO for Deep Search Agents: Knowledge-Grouped RL Outperforms 32B Models, Scoring 40.2 on GAIA
Deep search agents struggle with credit assignment across long, noisy retrieved contexts. Zhejiang University and Tencent open-sourced KnowGPO (arXiv:2610.22331, GitHub: ZJU-REAL/KnowGPO), an RL framework that groups search trajectories by atomic knowledge conditions rather than surface observations. Qwen3-8B fine-tuned with KnowGPO achieves 38.8% on BrowseComp-ZH and 40.2% on GAIA, outperforming GRPO/GiGPO baselines and rivaling 32B open-source search systems.
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